The answer to this question is option 2
Answer:
separation of a liquid mixture into fractions differing in boiling point (and hence chemical composition) by means of distillation, typically using a fractionating column.
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Answer:
Explanation:
We know that from Newton's second law of motion, F=ma hence making acceleration the subject then 
where a is acceleration, F is force and m is mass
Also making mass the subject of the formula 
For 
and 
hence 
Risk of return on investment is higher than other forms of energy generation.
